/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.apis.view;

import com.example.android.apis.R;

import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.TimePickerDialog;
import android.app.Dialog;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TimePicker;
import android.view.View;

import java.util.Calendar;

/**
 * Basic example of using date and time widgets, including
 * {@link android.app.TimePickerDialog} and {@link android.widget.DatePicker}.
 * 
 * Also provides a good example of using {@link Activity#onCreateDialog},
 * {@link Activity#onPrepareDialog} and {@link Activity#showDialog} to have the
 * activity automatically save and restore the state of the dialogs.
 */
public class DateWidgets1 extends Activity {

	// where we display the selected date and time
	private TextView mDateDisplay;

	// date and time
	private int mYear;
	private int mMonth;
	private int mDay;
	private int mHour;
	private int mMinute;

	static final int TIME_DIALOG_ID = 0;
	static final int DATE_DIALOG_ID = 1;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		setContentView(R.layout.date_widgets_example_1);

		mDateDisplay = (TextView) findViewById(R.id.dateDisplay);

		Button pickDate = (Button) findViewById(R.id.pickDate);
		pickDate.setOnClickListener(new View.OnClickListener() {

			public void onClick(View v) {
				showDialog(DATE_DIALOG_ID);
			}
		});

		Button pickTime = (Button) findViewById(R.id.pickTime);
		pickTime.setOnClickListener(new View.OnClickListener() {

			public void onClick(View v) {
				showDialog(TIME_DIALOG_ID);
			}
		});

		final Calendar c = Calendar.getInstance();
		mYear = c.get(Calendar.YEAR);
		mMonth = c.get(Calendar.MONTH);
		mDay = c.get(Calendar.DAY_OF_MONTH);
		mHour = c.get(Calendar.HOUR_OF_DAY);
		mMinute = c.get(Calendar.MINUTE);

		updateDisplay();
	}

	@Override
	protected Dialog onCreateDialog(int id) {
		switch (id) {
		case TIME_DIALOG_ID:
			return new TimePickerDialog(this, mTimeSetListener, mHour, mMinute,
					false);
		case DATE_DIALOG_ID:
			return new DatePickerDialog(this, mDateSetListener, mYear, mMonth,
					mDay);
		}
		return null;
	}

	@Override
	protected void onPrepareDialog(int id, Dialog dialog) {
		switch (id) {
		case TIME_DIALOG_ID:
			((TimePickerDialog) dialog).updateTime(mHour, mMinute);
			break;
		case DATE_DIALOG_ID:
			((DatePickerDialog) dialog).updateDate(mYear, mMonth, mDay);
			break;
		}
	}

	private void updateDisplay() {
		mDateDisplay.setText(new StringBuilder()
				// Month is 0 based so add 1
				.append(mMonth + 1).append("-").append(mDay).append("-")
				.append(mYear).append(" ").append(pad(mHour)).append(":")
				.append(pad(mMinute)));
	}

	private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() {

		public void onDateSet(DatePicker view, int year, int monthOfYear,
				int dayOfMonth) {
			mYear = year;
			mMonth = monthOfYear;
			mDay = dayOfMonth;
			updateDisplay();
		}
	};

	private TimePickerDialog.OnTimeSetListener mTimeSetListener = new TimePickerDialog.OnTimeSetListener() {

		public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
			mHour = hourOfDay;
			mMinute = minute;
			updateDisplay();
		}
	};

	private static String pad(int c) {
		if (c >= 10)
			return String.valueOf(c);
		else
			return "0" + String.valueOf(c);
	}
}
